Indoor dust cleaning scope of work documents August 2002

NYC 9/11 Public Portal Document

electronic format or website approved by EPA within 24 hours of activity.

13. Pre-cleaning and Post-cleaning Wipe Sampling Procedures

a. The Project Monitor will collect pre-cleanup and post-cleanup wipe samples at 5 percent of the residences cleaned up to a maximum of SO residences as instructed by EPA. This sampling will consist of the collection of 3 pre cleaning and 3 post cleaning wipe samples for dioxin, total metals and mercury (Note: a separate wipe sample is required for each parameter). Metals and mercury wipe samples will be collected in accordance with procedures specified in HUD Appendix 13.1. Dioxin wipe samples will be collected m accordance with the procedures specified in ASTMD 6661-01.

b. The Mordtoring Contractor will document all the necessary information regarding sampling activities, fill out all field logs, data sheets, and chain-of-custody forms. The Monitoring Contractor shall use F2L for all sample and chain-of-custody documentation. Samples must be labeled and accompanied withe •letedchain-of- custody forms before shipping to Ihe designated laboratory. The label must include the EPA Project Tracking Number. Samples will be packed, sealed and shipped daily by courier for next day delivery to Paradigm Analytical Laboratories at: 2627 Northchase Parkway SE, Wilmington NC 28405

c. Persoimel collecting wipe samples shall be familiar with and experienced in the collection of wipe samples using the specified sampling method.

Deliverables

Ihe Project Monitor will keep a field notebook and document sampling locations (including a field sketch). The Project Monitor shall complete chain-of-custody forms and record the number of wipe samples, EPA Project Tracking Numbers, the laboratory address, date, and sample IDs in an agreed upon electronic format or website approved by EPA within 24 hours of activity.

14. The Project Monitor shall schedule and oversee the cleaning operations of the Cleaning Contractor. Prior to initiating the cleaning of any residence, common space or HVAC system the Monitoring Contractor shall verify that the exterior of the building has been cleaned or has been inspected and found to be free of debris from the collapse of the WTC or shall obtain written authorization from EPA to proceed. No residential or common space shall be cleaned until the HVAC system has been evaluated and cleaned as necessary. If a scheduling problem arises, the Project Monitor should contact EPA. The Project Monitor shall coordinate daily access for cleaning and sampling with residents, owners, the Cleaning Contractor and sampling technicians.

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